Apparatus for discharging excess exhaust gases from motors working on a closed cycle.



G. F. JAUBBRT.

APPARATUS FOR DISGHARGING EXCESS EXHAUST GASES FROM MOTORS WORKING ON A CLOSED CYCLE.

APPLICATION FILED MAR. 25, 1909.

953,146. Patented Mar. 29, 1910.

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w I a & k 0 kk w t k 1 Q t T Q \Q \l m l w 4 q I l 1 WITNESSES: 4 INVENTOR {K WZQM' zlwww namunuavs I G. F. JAUBERT. APPARATUS FOR DISUHARGING EXGESS EXHAUST GASES PROM MOTORS WORKING ON A CLOSED CYCLE.

APPLICATION FILED MAR.25,-1909.-

Patented Mar.29, 1910.

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| kINVENTOR 44/ /%M/ W ATTORNEYS To all whom it may concern:

; UNITED STATES PATENT OFFICE.

GEORGE rnancois JAUBER'I, or PARIS, FRANCE.

APPARATUS non. DISCHARGING nxcnss EXHAUST GASES FROM MOTORS WORKING'ON I A cLosEn- CYCLE.

Application filed March 25, 1909. Serial N0. 485,848.

Be it known that I, GEORGE FRANQOIS JAUBERT, of 155 Boulevard Malesherbes, Paris, France,.have invented certain new ,and useful Improvementsin'and Relating to Apparatus 'for Dischar ing Excess Exhaust Gases from Motors :lh orking on'a Closed Cycle, of whichthe following is a specification.

This invention has for its, object a process.

and-corresponding apparatus for-the expul- 'sion of the excess of exhaust gases from motors workin on a closed cycle, and is principally inten ed for those used in submarines. 1 5.

In motors of this kind used for propelling submarines, and working on an open cycle "during navigation 9 the surface and on a closed cycle during ImIHBISIOII, the excess ."of exhaust gases notusedin the formation of a firing mixture by dilution with,oxygen, are ,expel ed fromflt-he boat by an air ump of the. type used ior condensers, which is I controlled byfthe' motor.

The invention has for its princi a1, object to allow the automatic exhaust of t ese gases without the help of any special pump, and,

' moreover,'to perform the operatlon outside pipes 6, equal inhumberto the motor cyhnthe hull, so as to avoid any leakage of bad gases into the interior of the boat.

In the accomp an ing. drawing :'--Figure 1 shows part of the 'ong'itudinal section of a submarine furnished f'with an arrangement which'allows the invention to be carried into effect. Fig. 2-is a plan view, and Fig. 3 is a cross-section along the line 33 in F ig. 1. Fig. 4 is an outside view of the boat. Fig. 5 is a modification of the exhaust chest.

The process consists in passing the exhaust gases from the motor into a chamber which is connected with the cooling and purifying apparatus, and which is provided with a stop-valve or similar mechanism arranged to open at a given pressure in the cycle, and in using the exhaust back-pressure to expel the excess of gas without the help of a pump or the like.

The motor a is provided with exhaust ders,'pass1ng through water-tight joints in the hull c of the boat, and leading to a lon itudinal receiver (Fig. 2) 'fixed to the hu 1.

Thisreceiver communicates with an exhaust 'chest'or chamber 6 (Fi s. 1 and 4), formed,

for example, with a lid outward, constantly reclosed bythe weight communicate by two he collected inside the boat by a or'cover 7' opening a of water above it. and capable of swinging on a hlnge g.

Just before the chest e, two transverse receivers h branch out f 'om the ipe d, and I sets of l dngitudinal tubes 2 j wlth two receivers la, leading to the dome m fixed on the hull. In the lower part Specification of letters Patent. Patented Mar. 29, 1910. I

of this dome is the admission chamber n,

from which the pipe 0 leads to the upper part p, which is furnished with bafiles g and communicates by the pipe 7', assing through the hull of the boat, with a t ree-way-cock s, from which a pi e 6 passes to the motor. This cock 8 may urther be provided with a tube u, by which oxygen can be introduced. The apparatus is com leted by regulators, stop va ves, and the lilie provided to regulate the admission of 0 exhaust gases from the motor, and to keep the volume and pressure constant.v These details might be placed at w and y for example.

The working isas follows :-During the working on an open-cycle when proceeding on the surface, since the cover [of the ex haust chest (2 is freed from the column of water which it supports during immersion, the exhaust gases led by the ipes 12 into the receiveral pass into the chem er e and cause thecover to rise, escaping into the atmosphere without any appreciable back-pres sure. When working on a closed cycle, the lid f is weighted by the pressure of the water above it, so as only to 0 en at some determined pressure, in the cyc e, regulated by means of the valve w; theexha'ust gases then pass from the motor through .the receiver d through the transverse receiver ,h, an

through the two series of tubes 2' j, in which they are cooled. They next collect in the receivers is from which they pass to the dome m. Continuing their course through the bafiles g, ,they deposit, due to, contactwi'th these, the condensed water, oil and petrol which they contain in suspension; these may draining pipes not shown. (The set of tubes comprises also purifying apparatus which is not shown.) The uses escape from the dome m by the regulating device a, and the pipe 1', and after passing through the cock s where they receive a suitable addition of oxygen, they pass to the motor as a firing mixtln' The excess ofgas which is not used in wor the 'motor, tends to inxygen as well as the system 'of nished with springs or other means of loadpossible.

an internal combustion motor, cooling and crease the pressure in the cycle, and causes i the cover f to open, allowing the gas to escape outside.

The-advantages are as follows :The invention dispenses with the pumps and similar mechanisms which are used to expel the excess of gas and which are driven by the motor. The efficiency of the motor is thus increased, by diminishing the effort needed without increasing the back-pressure, since it is well-known that even when running in the open air, explosion motors always exhaust at a much higher pressure than thatgiven by the column "ofwater ten to fifteen meters in height which is supported bya submarine during immersion. The exhaust chest may have any shape or arrangement, and may carry any number of valves, furing, or not, just as desired.

The receivers h and is, and the sets of tubes z j, may be surrounded with sheet-iron so as to obtain a thorough circulation of water around them, and. to allow the gases of combustion to be as completely cooledvas The exhaust chest may have the arrangement shown in Fig. 5, consisting of'an inverted bell l fixed to the hull, having an opening 2 inits lower portion, constantly reclosed after the escape of gas by the weight ofwater above it, and with the pipe 3 discharging into the upper portion.

The invention can be applied to motors of all kinds working on a closed cycle, and chiefly to the motors of submarines.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed I declare that what I claim is:

1. In a power system for submarine boats, an internal combustion motor, cooling and purifying apparatus for the products of combustion, and conduits leading from the combustion chamber of the motor to the cooling and purifying apparatus and returning from such apparatus to the combustion chamber, whereby the apparatus may be worked on a closed cycle in combination with an exhaust conduit leading outside the hull and a loaded valve in the exhaust conduit, whereby the pressure of the exhaust gases is effective to discharge the excess gases overboard.

2. In a power system for submarine boats,

purifying apparatus for the products of combustion, and conduits leading from the comconduit leading outside the hull and a valve in the exhaust conduit loaded by the water of submersion, whereby the pressure of the exhaust gases is effective to discharge the excess gases overboard against the pressure of the water of submersion. z 3. In a power system for submarine boats, an internal combustion motor, cooling and purifying apparatus for the products of combustion, conduits leading-from the combustion chamber of the motor to the cooling and purifying apparatus, and returning from such apparatus to the combustion chamber, whereby the apparatus may be worked on a closed cycle, and a valve controlling said conduits, in combination with an exhaust conduit leading outside the hull and a valve in the exhaust conduit loaded by the water of submersion, whereby the pressure of the exhaust gases is effective to discharge the excess gases overboard against the pressure of submersion.

4. In a power system for submarine boatsi an internal combustion motor, cooling an purifying apparatus for the products of com bustion, such apparatus being composed of a series of tubes z' j, and a dome m containing bafile-plates, conduits leading from the com whereby the apparatus may be worked on a closed cycle, and a valve 00 controlling the flow of fluid through such conduits, in combination with an exhaust conduit leading outside the hull and an exhaust receiver 6 covering theend of said exhaustconduit and closed by a hinged cap f, which, upon submersion is loaded by the surrounding water, whereby the pressure of the exhaust gases is eflective to discharge the excess gases overboard against the pressure of the waterof submersion.

In testimony whereof I have hereunto placed my hand at Paris, France, this sixteenth day of March 1909.

GEORGE FRANQOIS JAUBERT.

In the presence of two witnesses:

H. C. Coxn, HE RY SCHWAB.

bustion chamber of the motor to the cooling 

